IP subnet calculator

81.171.28.30-81.171.28.59

81.171.28.30-81.171.28.31
81.171.28.30/31

81.171.28.32-81.171.28.47
81.171.28.32/28

81.171.28.48-81.171.28.55
81.171.28.48/29

81.171.28.56-81.171.28.59
81.171.28.56/30